← Back to Search Severity: Medium

B0397

B0397: Malfunction of Front Fog Light

Fix Cost
$50 - $150
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Body
System

📖 What Does B0397 Mean?

The B0397 code indicates a problem with the front fog light circuit, possibly due to a faulty fog light switch, wiring issue, or a problem with the fog light itself.
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Symptoms

  • Fog light does not turn on
  • or turns on intermittently
  • and may also trigger the 'check engine' light on the dashboard.
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Common Causes

  • Faulty fog light switch
  • worn-out or damaged wiring
  • faulty fog light bulb
  • or a problem with the fog light relay.
Fix Guide
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Possible Solutions

1. Check the fog light switch for any signs of wear or damage. Clean or replace it if necessary. 2. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as needed. 3. Check the fog light bulb and replace it if it's worn out or damaged. 4. Check the fog light relay and replace it if it's faulty.

Common Questions About B0397

Can I drive with code B0397?

You can drive for a short time, but should address code B0397 soon to avoid worsening the problem or failing an emissions test.

How much does it cost to fix code B0397?

The estimated repair cost for code B0397 is between $50 and $150. This includes parts and labor. Prices may vary based on your vehicle's make and model.

Is code B0397 easy to fix myself?

This repair is considered moderate. It may require specialized tools or significant disassembly. If you are not an experienced mechanic, professional help is recommended.

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Need a Pro?

Complex codes like B0397 can be tricky. Don't risk it if you're unsure.

Quick Stats

Severity Medium
DIY Friendly Yes
Est. Time 1-2 hours
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Related Diagnostic Codes

Other codes that may appear with B0397

💡 Why These Codes Are Related:

  • Similar Issues: Same root cause or component failure
  • Related Problems: Often occur together due to system interactions
  • Sequential Codes: Progressive failure stages or multiple sensors
  • Same System: Components within the same automotive system